Toothbrush



FIG. 1 is a left side elevational view of a toothbrush showing my newdesign, it being understood that the right side is a mirror imageduplicate thereof;

FIG. 2 is a top plan view thereof;

FIG. 3 is a bottom plan view thereof;

FIG. 4 is a left end elevational view thereof; and

FIG. 5 is a right end elevational view thereof.

The ornamental design for a toothbrush, as shown and described.